> Claude Fable 5 is a closed AI model from Anthropic, released 9 Jun 2026. Index score 185 (GPT-4 = 100), rank 6 of 229 ranked models. API price $10 in / $50 out per million tokens, 1M context.

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# Claude Fable 5

Anthropic

Released 9 Jun 2026

Closed

Flagship

Date verified

[Compare](https://themodelindex.org/compare/claude-fable-5-vs-glm-5-2/) [Announcement](https://www.anthropic.com/news/claude-fable-5-mythos-5)

185174–196

Index score

#6 of 229 models

4/ 8

Core tests taken

4 of 6 areas · plus 20 anchor tests

Frontier

Versus the frontier at release

set or matched the record

Replaced by [Claude Fable 5.1](https://themodelindex.org/models/claude-fable-5-1/)

$10/ $50

Price per million tokens

input / output, list price

1M

Context window

tokens it reads at once

## Where it sits · on the frontier

_Chart: Model Index score of every scored model since late 2022, with the best closed and best open model over time_

Among the first models to reach this score.

## Test results · by area · tick = best by any model

Show 15 anchor tests

Reasoning & knowledge

evidence

GPQA Diamond

86%

Humanity's Last Exam

no result

Maths

evidence

FrontierMath T1-3

87%

Coding

evidence

SWE-bench Verified

no result

Terminal-Bench

no result

Agents

evidence

APEX-Agents

64%

Novel problems

evidence

ARC-AGI-2

89%

Long tasks

no evidence yet

METR time horizon

no result

Independent results from the Epoch AI benchmarking hub, best reasoning setting. The core tests are shown here; anchor tests also inform the score and can be shown above.

## What others say · rank on each leaderboard

The Model Index

independent tests, our method

#6

of 219 · 185

LMArena · Coding

coding questions in chat

#2

of 383 · 1552

LMArena · Vision

understanding images

#1

of 149 · 1310

LMArena · Text

overall chat quality, judged by people

#3

of 388 · 1505

LMArena · Creative writing

creative writing

#3

of 386 · 1503

LMArena · Maths

maths questions in chat

#3

of 373 · 1522

Epoch Capabilities Index

overall capability from many benchmarks

#7

of 239 · 162.2

LiveBench · Overall

overall, with fresh questions to limit contamination

#3

of 58 · 83

LMArena · Documents

working with long documents

#5

of 41 · 1496

LMArena · WebDev

building web apps and front ends

#16

of 123 · 1626

LMArena · Search

answering with web search

#5

of 34 · 1230

Further left is better. Leaderboards measure different things: LMArena is people voting blind between two answers, the others are test scores. Click any row for the source.

## Best at · top three among current models

1st

answering with web search

LMArena · Search

1st

understanding images

LMArena · Vision

1st

language questions

LiveBench · Language

2nd

coding questions in chat

LMArena · Coding

2nd

maths questions in chat

LMArena · Maths

2nd

working with long documents

LMArena · Documents

3rd

creative writing

LMArena · Creative writing

3rd

data analysis questions

LiveBench · Data Analysis

Where this model places in the top three of today's models, on category leaderboards and on our core tests.

## Where to use it · prices checked 1 Oct 2026

#### From the lab

Claude

app · subscription

↗

Claude API

API

↗

#### API providers · 5 · per million tokens, in / out

C

Claude Platform on AWS

$10 / $50

cheapest

A

Azure

$10 / $50

↗

A

Amazon Bedrock

$10 / $50

↗

G

Google

$11 / $55

↗

A

Anthropic

$10 / $50

↗

Provider prices come from OpenRouter's live listing; going direct to a provider can differ. Subscriptions are the lab's own apps.

## Facts and sources

Released

9 Jun 2026

Announcement

[anthropic.com ↗](https://www.anthropic.com/news/claude-fable-5-mythos-5)

Release entry

Claude Fable 5 + Mythos 5 (restricted)

Scored as

Claude Fable 5

Artificial Analysis index

–

Output speed

–

Hugging Face

closed weights

## Anthropic releases · around this one

Claude Opus 4.7

Closed

16 APR 2026

index 169

Claude Opus 4.8

Closed

28 MAY 2026

index 174

Claude Fable 5

Closed

9 JUN 2026

index 185

Claude Mythos 5

Closed

9 JUN 2026

Claude Sonnet 5

Closed

30 JUN 2026

index 169

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Source: https://themodelindex.org/models/claude-fable-5/ · The Model Index · data as of 2026-10-01